340038841 has 2 divisors, whose sum is σ = 340038842. Its totient is φ = 340038840.

The previous prime is 340038823. The next prime is 340038847. The reversal of 340038841 is 148830043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 339333241 + 705600 = 18421^2 + 840^2 .

It is an emirp because it is prime and its reverse (148830043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 340038841 - 2¹¹ = 340036793 is a prime.

It is not a weakly prime, because it can be changed into another prime (340038847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170019420 + 170019421.

It is an arithmetic number, because the mean of its divisors is an integer number (170019421).

Almost surely, 2^340038841 is an apocalyptic number.

It is an amenable number.

340038841 is a deficient number, since it is larger than the sum of its proper divisors (1).

340038841 is an equidigital number, since it uses as much as digits as its factorization.

340038841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 340038841 is about 18440.1421089969. The cubic root of 340038841 is about 697.9797813264.

Adding to 340038841 its reverse (148830043), we get a palindrome (488868884).

The spelling of 340038841 in words is "three hundred forty million, thirty-eight thousand, eight hundred forty-one".